Discourse on Metaphysics (Unabridged): optional

Zero: The Biography of a Dangerous Idea

Discourse on Metaphysics - Unabridged

The Story Of Aristotle's Philosophy (Unabridged)

Discourse on Metaphysics

Summary of Will Durant & Ariel Durant's The Lessons of History

Philosophical Investigations

Kant: A Very Short Introduction

Philosophy of Science: A Very Short Introduction, 2nd Edition

Philosophy 101: From Plato and Socrates to Ethics and Metaphysics, an Essential Primer on the History of Thought

The Philosophy Book: Big Ideas Simply Explained

Hegel: A Very Short Introduction

An Essay Concerning Human Understanding

The Dream of Reason, New Edition: A History of Western Philosophy from the Greeks to the Renaissance

The History of Philosophy: A Marxist Perspective

Schopenhauer: A Very Short Introduction

The Art of War

Evil in Modern Thought: An Alternative History of Philosophy

Crito

Summary of Peter Singer's Marx